A Pet Passport is a passport format document that officially records information such as identity (name, ID number), health, and vaccination status related to a specific pet in the matter of easy pet relocation.
The use of pet passports or other pet documents varies on a state by country basis. In Hong Kong, clinics did not issue pet passports. And you have pet flying together option, the traditional position in Hong Kong is, most veterinary clinics place vaccination labels on a vaccine card. In some countries like USA, the veterinarians tend to print out a one standard page detailing what vaccines were done on that visit day, as a Vaccination Certificate.
In Europe, Pet Passports are used. The role of the Pet Passport is together with the pets microchip (a tiny electronic device readable by a scanner and injected subcutaneously under the pets skin) and the pets physical appearance (sex, neutered or not, age, breed, color) to act as a record and as one place where all these details are recorded. This passport is then able to be used like mankind passports, to enable ease of travel and pet check in.